Dirt separator



Nov. 23 1926. 1,607,744

P. S. MABIE DIRT SEPARATOR Filed April 11, 1924 2 Sheets-Sheet 1 (ID V /7 27 (W28 Nov. 23 1926. I 1,607,744

P. s. MABIE DIRT SEPARATOR Filed April 11, 1924 2 Sheets-Sheet 2 W PM J. jfabzie ill Patented Nov. 23, 1926.

UNITED 'STA TES PATENT OFF] PAUL S. MARIE, OF JANEsvlLLE, WISCONSIN.

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Application nice April 11', 1924. Serial no. 705,798.

a dust separator or air purifier which will.

be cheap to manufacture, durable in construction, small in size, andefiicient in operation.

It is believed the invention will be understood most readily from a detailed description thereof taken in connection with the accompanying drawings, in which Figure 1 is a plan view of one form of applicants invention;

Figure 2 isavertical section substantially through the line 2 '-2 of Figure 1;

Figure 3 is a side view ofa modified form of appli'cants separator;

Figure 4 is a section substantlally on the line 4-4 of Figure 3, and

Figure 5 is a section on the hue 5-5 of Figure 4. I

Referring now to the drawings, in which like reference characters indicate the same parts in the several views, schematically indicates a carbureter, the intake 11 of 'whic is joined through'the medium of the pipe 12 to the upwardly extending outlet 13 of applicants dirt separator. The separator consists of the substantially th'imble-shapedmember 1 1 having the outwardly directed flange 15which forms anupper circular defiecting baflle. The member 14 adjacent to T the upper end thereof is'screw threaded and has attachedthereto the upper substantially semi-spherical half 16 ofthe' separator housing. The housing member 16 is provided with a laterally extending tube 17 which is arranged adjacent to the circumference thereof and. directed tangentially thereto.-

The member 16 adjacent to the lower edge thereof is provided with the outwardly directed flange 18 The bottom portion of the casing is provided by the downwardly tapered member 19 which has at its upper edge the laterally directed flange 20 secured to the flange 18 by means of the bolts 21. The

casing or housing member 19 is provided atv the lower end thereof with an opening 22, and has at the lower end thereof the laterally directed baifie plates 23 which extend downwardly into the opening 22. v

Secured to the lower end of the member 14, by means of the ca screw 24, is the curved or concaved mem er 25 which forms the upper edge of which terminates adjacent to the ower surface of-the outwardly directa lower shield or circular baflie member,

ed flange or bafile 15 but a substantial fdistance within the outer edge thereof; The member 1a isprovided between the flange 15 and the shield member 25 with a lurality of air inlet openings 26 through w ich the air passes to the inside of the member 14. The outer end of the air intake tube or conduit 17 is provided with a shield 27 secured in position in any desired manner, as by the brackets 28 and screws 29..

The operation, of the device is as follows: The air entering the carburetor 10 is drawn in throughthe intake conduit 17 to the space 30 between the upper casing members 16 and the flange 1 5. The air then passes downwardly through the narrow opening 31 at the outer edge of the flange 15 downwardly therethrough very rapidly, and the dust and heavier particles within the air. continue on their downward course to the bottom of the member 19 and out through the opening22, Due to the battle plates 23 arranged adjacent to the opening 22, the air adjacent to-the opening is prevented from a rotary or swirling motion a'nd the dirt readily The; air, however, which is drawn downwardly through the space 31 asses through the space 32 within the shied member .25, through the openings 26 to the inside of the member 14. A large ortion of the. air entering through the con uit 17 is drawn to the opposite side of, the separator, and in moving around the member 14 in the space 30, it causes a centrifugalaction to be exerted on the dirt and grit particles in the air which causes them to be impelled against the casing member 16' and downwardly through the space 31. The air, which moves rapidly while passing downwardly thru the space 31 causes the grit and dirt articles to have such a momentum that t follow the air in its relatively slow return movement to the opening 32. Y

Figures 3, e and .5 show a modified form of. applicants invention. The device shown in Figures 1 and 2 is'designed to have the air exit opening extend upwardly, whereas to have the air exit opening extend downpasses from the separator casing.

into the s ace within the lower casin member 19. s the space 31 is relative y narrow, the air with the entrained dust passes eydo not lit) wardly. The device of Figures 3, 4 andr5 consists of but two castings. The upper casting is inverted bowl shape in contour and is provided with the laterally directed intake conduit 36 which is arranged adjacent to the outer edge of the member 35 and directed tangentially thereto.

Withinrthe bowl shaped member 35 is the air outlet member 37, the upper end of which is secured to the member 35 by means of the cap. screw 38. The member 37 is generally cylindrical in contour and has the outwardly extending flange 39, the edge of which is spaced slightly from the lower edge of the member 35 to provide the narrow opening 40.v The member 39 is provided with a plurality of spaced downwardly extending wings or baflle plates 41 which engage the member 35 adjacent to the lower edge thereof. The member 37 is provided at one side thereof with the laterally extending enlargement 42 which substantially fills the space between the member 37 andthe member 35 at one side thereof. The enlargement 42 terminates short of member 35 to provide a passage 47 the purpose of which will later appear. The member 42 is provided in the side remote from the conduit 36 with an opening 43 through which air may enter the member 37 of the separator.

The outer end of the conduit 36 is provided with the shield 44 which is shown as secured thereto by means of the bracket members45 and screws, 46. The shield 44 of the modification of Figures 3 to 5, and

the shield 27 of the form shown in Figure 1' acts to deflect the heavierparticles of grit and dirt from the separator. This expedient, however, is old and forms no part of the present invention.

The operation of the device shown in Figures 3 to 5 is asfollows:

Air passing to the carbureter through the member 37 is drawn in through the conduit 36, passes centrifugally around the space 47 between the central member 37 and the cover 35, through the opening 43 to the inside of .the member 37. Due to the fact that the air entering themember 37 has to pass nearly around the member 37 before reaching the opening 43, the it and heavier particles entrained in the air are thrown by centrifupass through the space 47 provided at the outer edge of the extension 42 and will eventually find its way out through the opening 40.

While in the drawings and the above description applicants invention has been limited to certain definite details of construction, it is to be understood that various modifications are contemplated, and the invention should, therefore, be limited merely by the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of therUnited States is:

1. In a dirt separator for internal combustion engines, a casing forming a centrifugal. whirling chamber, an airinlet entering the u per part of said whirling chamber tangentia ly to impart a centrifugal whirling motion to the air entering said chamber, the lower portion of said chamber being of conical formation converging to a lower dust outlet, a plurality of plates adjacent said outlet and extending upwardly along the inner conical surface of said chamber, a pair of battles supported in superposed relation in said chamber between said air-inlet and said dust outlet, the lower baflie having its peripheral edge disposed in close proximity to the under side of' the upper bafile' whereby air entering the space between said baiiies is drawn between said battles in a relatively thin curtain, and an air outlet from said chamber having its inlet terminating in the area between said baflles.

2. In a dust separator for internal combustion engines, the combination of the casing forming a centrifugal whirling chamber and comprising an upper casing section and a lower casin section of conical form, a tangential air in ct entering said upper casing section, a pair of bafie plates extending across said chamber, a dust outlet at the bottom f said "conical casing section, and deflectmg plates positionedadjacent said dust outlet and extending upwardly across the bottom portion of said conical section and along the side of said casing.

3. In a dirt separator for internal combustlon engines, a casing formin a centrif ugal whirling chamber, an air inlet entering the upper part of said whirling chamber tangentially to impart a centrifugal whirling motion to the air entering said chamber, a dust outlet leading from the lower part of said chamber, a pair of circular baiiies supported in superposed relution in said chamber between said air inlet and said dust outlet, an air outlet leading of the upper baii'le, whereby the air entering said air outlet is first drawn between said bafiies in a relatively thin curtain.

4. In a dust separator for internal conibustion engines, a casing forming a centrifugal whirling chamber, an air inlet entering said whirling chamber tangentiallyto impart a centrifugal whirling motion to the air in said chamber, an upper circular baffic extending transverselyacross the whirling chamber with its periphery terminating adjacent the wall of said chamber, the air entering said whirling chamber from. said air inlet being caused to pass down through the annularopenin between said upper baffle and the wall 0 said chamber, the lower portion of said chamber being of conical formation converging to a lower dust'toutlet, a plurality of plates adjacent said outlet and extending upwardly along the inside of said chamber, ,a circular lower baflie disposed below said upper baflle, and an air outet drawing from the region between said baflies, said lower battle being disposed in close proximity to said upper battle to. cause the air entering said air outlet to flow in a under sideof said upper battle.

5. In a dust separator for internal com relatively thin curtain inwardly along the bustion engines, a casing of turnip-shape comprising an upper casing section and a lower casing section of conical form, means for joining said casing sections together, a

tangential air inlet entering said upper cas-- ing section, a dust outlet'leading from the bottom of said conical lower section, a thimble member carried by said upper ,section and extending down into the whirling chamber axially thereof, a circular bafiie carried by said thimble member and having its periphery terminating in close proximity to the inner Wall of said whirling chamber, a-

second baflie below said first. named baifle,a 3 screw for mounting said second baflie on the bottom of said thimble member, and a plurality of air inlets to said thimble member between said bafiles.

6, Ina dust separator for internal combustion engines, a casing forming a centrifugalwhirling chamber and comprising an upper casing section and a lower casing sec-4 tion of conical form, a tangential air inlet entering said upper casing section,a dust outlet leading from the bottom of said lower casing" section, a-separate tubular member extending into said whirling chamber axially thereof, a circular bafiieextending from "carried by saidupper casing. section and said tubular member transversely of said whirling chamberand its periphery lying in. close proximity thereto, and a bowl-shaped baflle sup orted on said tubular member be- '1 low said rst named bafiie, said tubular member constituting an air outlet and drawing its air from the region between said baflies.

In witness whereof, I hereunto subscribe. my name this 1 day of April, 1924. PAUL S. 'MABIE. 

